So I pulled the top off of my Edelbrock 750 Performer 1407 last night as I just received the calibration kit in the mail. My A/F readings show lean all the way thru, super lean off idle and now about 15.0 at WOT.Not sure why it changed from before..
The previous owner had dyno tuned this carb to my old motor, which had a little bigger cam and better heads.
It has .113 secondaries, .110 primary jets and a 1457 (.073 x .052) rod. This primary combo isn't even on the Eddy Calibration chart. The closest is spot 26, which is 3 steps lean in cruise and 1 lean in Power. That is with the .110 jet and .073 x .047 rod. My rod is even wider, so I may be 2 steps lean in power. So I decided to set it back to original specs and see where I am at, but I did keep the big secondary jet in since it was so lean at WOT. Probably shouldn't have, but I couldn't test drive it because my practically new OEM positive battery cable broke at the terminal. I have probably had it off 4 times... Bummer.